> The way the different states are colored according to their time zone and then that color reaching out to the labels on top with those ray-like things is actually pretty clever.

So the different components of this visualization genuinely solve a few different problems around color-blindness (necessary for 508 compliance is my guess, but I'm not an expert here)

Grab a screenshot (https://i.imgur.com/9ynIz5G.jpg) and drop it in here (https://www.color-blindness.com/coblis-color-blindness-simul...)

The only mode where any two zones next to each other are nearly identical is Red-blind/Protanopia (CMK identical, Y 8% higher in UTC-7 compared to UTC-8†). Monochromacy/Achromatopsia is a close second... and that's where the gradients to the clocks come in - even for those users, there's still a mechanism to distinguish those two zones.

I'd guess some serious usability research went into this.

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† RGB, though more accurate since we're talking about a screen, would've been a little more complicated to compare in writing since only yellow changed between the two in CMYK